Eaton IZM97 Instruction Manual
  1. Manuals
  2. Brands
  3. Eaton Manuals
  4. Circuit breakers
  5. IZM97
  6. Instruction manual

Eaton IZM97 Instruction Manual

Hide thumbs Also See for IZM97:
Table of Contents

Advertisement

Quick Links

Download this manual
Instruction Manual MN013010EN
New generation IZM97, 99 low voltage air circuit
breaker instruction manual
IZM99
IZM97

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the IZM97 and is the answer not in the manual?

Questions and answers

Related Manuals for Eaton IZM97

Summary of Contents for Eaton IZM97

  • Page 1 Instruction Manual MN013010EN New generation IZM97, 99 low voltage air circuit breaker instruction manual IZM99 IZM97...
  • Page 2 Standards. instructions. If further information is desired by purchaser regarding particular installation, operation, or maintenance of particular equipment, contact the local Eaton representative. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 3: Table Of Contents

    3-5 Secondary contacts and connection diagrams ........22 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 4 9-1 Introduction ..............101 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 5: Section 1: Introduction

    The operating mechanism is a two-step stored energy mech- anism, either manually or electrically operated. IZM99 IZM97 Figure 1-1 IZM97,99 low voltage circuit breakers (800-6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 6: Safety Features

    The individual should be able to de-energize, clear, and tag circuits in accordance with established safety practices. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 7: Section 2: Receiving, Handling, And Installation

    (Figure 2-1). Remove the lag screws and clamps. Save the screws and clamps for future shipment of the breaker. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 8: Lifting Circuit Breaker

    IZM99N…50… 125.20 163.30 157.40 200.00 IZM99N…63… 125.20 163.30 157.40 200.00 IZM99H…40… 107.50 144.70 138.80 166.00 IZM99H…50… 125.20 163.30 157.40 200.00 IZM99H…63… 125.20 163.30 157.40 200.00 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 9: Adapting Cassette

    Do not disable rejection interlocks. Doing so and using a lower capacity circuit breaker in an incompatible cassette could result in an electrical fault that could result in death, bodily injury, and/or equipment damage. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 10: Installing Drawout Circuit Breaker

    Circuit Breaker Out of Compartment On Extension Rails • No Electrical Connections Made • Breaker On Extension Rails • Remove or Inspection Position Figure 2-4 REMOVE position New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 11 Side View Not Made • Breaker and Trip Unit Testing • Primary Connection Not Made • Secondary and Ground Connections Made Figure 2-6 TEST position New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 12: Levering Circuit Breaker

    Discharge Figure 2-8 Cassette label showing disconnected, test, takes place between the DISCONNECT and the TEST posi- and connected position of recessed cover tion. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 13 Figure 2-9 Drawout circuit breaker in cassette Figure 2-10 Drawout circuit breaker with automatic pri- mary disconnects New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 14 Optional Cell (TOC) Switch Optional Key Interlock Earthing Bar Open Safety Shutters Primary Terminals (Rear View) Figure 2-11 Drawout cassette features (front and rear views) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 15: Fixed Circuit Breaker

    This can be done figurations. during the installation process or some later date prior to New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 16: Technical Data

    Bus bar dimensions The bus bar sizes are shown in the table below. This table uses data specified by IEC 60947-1 or obtained by Eaton in their circuit breaker testing. They are 3-meter-long bus bars with the faces vertical and painted flat black. For other bus bar con- figurations, larger bus bar sizes may be required or the breaker may have to be de-rated.
  • Page 17 IZM97H3C-32 IZM99N3C-40 IZM99H3C-40 IZM99N3C-50 1000 IZM99H3C-50 1000 IZM99N3C-63 1550 IZM99H3C-63 1550 Based on RAC/RDC = 1.30, the total loss is under the full rated current. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 18 Width of cassette + 75 mm Width 550 mm Height 450 mm (front control panel bay) Depth 160 cm² (800-3200A) Ventilation holes 320 cm² (4000-6300A) Rear or lower vent New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 19: Section 3: Circuit Breaker Description And Operation

    Baffled arc chute cover Secondary disconnects (contacts) Faceplate (front cover) Drawout rail supports Integral lifting handle Figure 3-1 Typical drawout circuit breaker features (front and rear views) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 20 Baffled arc chute cover Secondary disconnect Faceplate (front cover) Integral lifting handle Fixed horizontal primary terminal Figure 3-2 Typical fixed circuit breaker features (front and rear views) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 21 Integral lifting handle Fixed vertical primary terminals (with optional vertical adapter) Figure 3-3 Typical double-wide standard frame fixed circuit breaker features (front and rear views) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 22 Trip unit cover with two mounting screws (mounting screws will accept customer-supplied lead security meter seals) Manual ON button (push) Figure 3-4 Typical drawout circuit breaker front cover New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 23: Basic Circuit Breaker Assembly

    Manual charge handle Operations counter (optional) Padlockable levering device access door Breaker position indicator Figure 3-6 Electrically operated drawout circuit breaker with front cover removed New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 24: 3-3.1 Manual Operation

    Figure 3-7 Electrical motor operator to charge closing Figure 3-8 Charging motor can be installed in the field spring (installed) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 25: Electronic Tripping System

    USB port on the trip unit. Please contact your Eaton sales representative for details on proper re-programming of the trip unit. Figure 3-9 Installed PXR trip unit New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 26: 3-4.5 Trip Actuator

    50 52 54 56 58 60 62 64 66 68 70 72 74 76 78 80 82 84 86 88 90 92 94 96 Figure 3-10 Secondary connector top view New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 27 (Figure 3-12). The connector halves must be separated to use this tool. Secondary terminal AMP secondary wiring removal tool Figure 3-12 AMP secondary wiring removal tool New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 28: Section 4: Accessory Devices

    110-127 Vac 77-140 Vac 450 VA 208-240 Vac 146-264 Vac 450 VA  Required for less than 35 ms. Figure 4-3 Shunt trip switch installed New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 29 450 VA 208-240 Vac 146-264 Vac 450 VA  Required for less than 200 ms Figure 4-6 Shunt trip, spring release, and undervoltage release installed New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 30: Internal Electrical Accessories

    (bell alarm) is an optional device that is used with an optional pop-out indicator (Figure 4-8). Mechanical trip indicator Figure 4-8 Mechanical trip indicator with associated overcurrent trip switch New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 31 600% of running 220-250 Vdc 187-225 600% of running 110-127 Vac 94-140 600% of running 208-240 Vac 177-264 600% of running  AC voltages are 50/60Hz New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 32: Mechanical Devices

    (Figure 4-11). The customer supplies the key lock. The provisions available are for Kirk, Castell, or Ronis. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 33 Door escutcheon—The door escutcheon is a molded frame used to seal the space between the circuit breaker and the compartment door cutout. It is supplied with a mounting gasket (Figure 4-17). New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 34 An illustration of a two-way cable inter- lock mounted on two drawout circuit breakers is shown in Figure 4-19. Figure 4-18 IP54 waterproof cover Figure 4-19 Cassette-mounted two-way cable interlock New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 35 3 for normal power supply (A&B &C), or in the case of emergency supply, only 1 circuit breaker can turn off. It requires 3 set of ropes. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 36: Accessory Installation

    (B) Counter drive Screw (C) Counter (1) (D) Reset spring (1) Figure 2. Step 1 and 2 (E) M3.5x8 tapping screw (2) (F) M3x6 tapping screw (3) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 37 Step 6: Check the functionality of the counter assemblies Step 7: Re-install the cover by following the procedure in Step 1. Figure 6. Step 6 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 38 Lock Hook foot First shunt trip Mounting panel mounting location Figure 3. Step 4 Screw labeling Figure 1. Step 1 and 2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 39 Figure 6. Step 7 Screw Step 8: Re-install the front cover by following the procedure labeling in Step 1. Figure 1. Step 1 and 2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 40 45° angle) to remove the front cover. Step 2: Attach the corresponding label under “Accessories” on the cover nameplate. Screw labeling Figure 1. Step 1 and 2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 41 Figure 3. Step 4 Step 5: Re-install the front cover by following the procedure in Step 1. labeling Screw Figure 1. Step 1 and 2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 42 IZM97/IZM99 case Terminal 50-60 Terminal 62-72 Terminal 74-84 Figure 1. Content of assemblies Step 5: Re-install the front cover by following the procedure in Step 1. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 43 Step 6: Re-install the front cover, and press the closing but- ton. Release all the energy from the mechanism by pressing the opening button to make the circuit breaker in open and released state. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 44 12) supplied. If a metal bezel (C) is required, install it between the panel and the pushbutton cover as shown. Metal bezel (C) (optional) Figure 1. Contents of kits Figure 4. Step 3 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 45 Overhead hook Cell switch TEST position Slide LOCKED forward position Lock catch DISCONNECT position Close Figure 4. Step 3 Open Figure 1. Cell switch wiring diagram New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 46 Figure 6. Step 5 lock not supplied) (C) Bearing bush (D) Lock mounting panel (E) Torsion spring (F) Interlock adapter kits (G) Lock nut (H) M3.2 lock spring New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 47 Key lock hole, position Ronis key lock (B) Ronis key lock (B) Figure 5. Step 5 Mounting screw Figure 2. Step 1 and Step 2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 48 Figure 12. Step 12 Free end of Hook here torsion spring Interlocking adapter kit (F) Interlocking adapter kit (F) Figure 9. Step 9 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 49 M3.5x8 tapping screws. Refer to the Operation Counter installation instructions. Step 15: Re-install the front cover. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 50 Metal spring lever of interlocking lever kit installed behind the circuit breaker rocker Circuit breaker lever Figure 4. Step 4 Figure 1. Contents of kits New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 51 (M), and then tighten it using the interlocking screw (P). Note the direction Figure 7. Step 7 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 52 Step 12: Re-install the front cover removed in Step 1. M10 hexagon nut Remove the key for easy installation. The key must be in cir- cuit breaker OPEN position. Figure 1. Step 1 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 53 (F) M6 square nut (6) (G) Interlocking kit (2) (H) Oil filler pipe (1) (I) M6 * 0.75 spacer washer (4) (J) Mounting panel (2) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 54 (C) are required for use. Torque to 4.5- 6Nm. To install the cable bracket, two M6*10 tapping screws (M) and self-locking washers (L) are required. Torque to 7-9Nm. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 55 (C) Grounding wire M6 square screw Remove screw and located at the rear of the support bracket grounding wire Figure 7. Step 5 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 56 1-4mm (refer to Figure 2). If these clearances are out of specification, stop installa- tion. Please consult Eaton for more assistance. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 57 (J) M6 self-locking washer (4) Figure 2. Step 1 (K) M6*10mm tapping screw (4) (L) Cable assembly (2) - (5, 6, 8, 10-foot for lengths) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 58 M6*12 hexagon screws (A) 2 mm and three self-locking washers (C). Torque to 4.5-5.6Nm. Figure 7. Step 7 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 59 Cable housing Rod A swivel Rod C swivel ring ring Figure 9. Step 9 Interlock assembly connection method Figure 8. Step 8 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 60 >1mm =1mm <1mm Gap 0 Gap 0 “C” “D” “A” “B” Figure 10. Step 10 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 61 (I) Spring pad (5) Secondary terminal kits (J) Square nut (4) Self-locking washer M6 mounting screw Figure 2. Step 2 Step 3: Re-install the front cover. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 62 Second wave Front cover Removable washer (I) plastic sheet First wave washer (I) Square nut (J) Figure 5. Step 4 Figure 3. Step 2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 63 Tighten the square nut until the wave washer is pressed flat 1.76 (44.7) 0.40 (10.2) Figure 6. Step 5 - Dimensions (mm) Figure 7. Step 7 - Dimensions (mm) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 64: Section 5: Dimensional Drawings

    Section 5: Dimensional drawings Section 5: Dimensional drawings IZM97 fixed type dimensions and horizontal board dimensions (3P , 800~3200A) Front view Right view Top view New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 65 Section 5: Dimensional drawings IZM97 fixed type dimensions and horizontal board dimensions (4P , 800~3200A) Front view Right view Top view New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 66 Section 5: Dimensional drawings IZM97 fixed type panel cutout and external vertical board dimensions (3P and 4P , 800~1600A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 67 Section 5: Dimensional drawings IZM97 fixed type external vertical board dimensions (3P and 4P , 2000A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 68 Section 5: Dimensional drawings IZM97 fixed type external vertical board dimensions (3P and 4P , 2500~3200A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 69 Section 5: Dimensional drawings IZM99 fixed type dimensions and horizontal board dimensions (3P , 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 70 Section 5: Dimensional drawings IZM99 fixed type dimensions and horizontal board dimensions (4P , 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 71 Section 5: Dimensional drawings IZM99 fixed type panel cutout and external vertical board dimensions (3P and 4P , 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 72 IZM97 withdrawable type dimensions (3P and 4P , 800~3200A) Notes: Drawer switch position Recommended minimum mounting space IZM99 Withdrawable Type Dimensions (3P and 4P ,4000~6300A) Notes: Drawer switch position Recommended minimum mounting space New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 73 Section 5: Dimensional drawings IZM97 withdrawable type panel cutout dimensions (3P and 4P , 800~3200A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 74 Section 5: Dimensional drawings IZM97 withdrawable type cassette dimensions and mounting dimensions (3P and 4P , 800~3200A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 75 Section 5: Dimensional drawings IZM97 withdrawable type cassette horizontal board wiring dimensions (3P and 4P , 800~3200A) 37.1 33.5 50.8 11.2 101.6 37.1 33.5 50.8 11.2 101.6 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 76 IZM97 withdrawable type cassette vertical board wiring dimensions (3P and 4P , 4000A) 101.6 101.6 83.3 30.5 30.5 10.9 57.2 101.6 101.6 83.3 30.5 30.5 10.9 57.2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 77 Section 5: Dimensional drawings IZM99 withdrawable type panel cutout dimensions (3P and 4P , 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 78 Section 5: Dimensional drawings IZM99 withdrawable type cassette dimensions and mounting dimensions (3P , 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 79 Section 5: Dimensional drawings IZM99 withdrawable type cassette dimensions and mounting dimensions (4P , 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 80 Section 5: Dimensional drawings IZM99 withdrawable type cassette horizontal board wiring dimensions (3P - 4000~6300A) New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 81: Section 6: Protective Characteristic Curves

    6. This curve is for 50Hz, 60Hz applications. 7. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current...
  • Page 82 8. This curve is for 50Hz, 60Hz applications. 9. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 83 7. This curve is for 50Hz, 60Hz applications. 8. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
  • Page 84 Instantaneous Asymmetrical Peak Current (kA) Notes: 1. Fixed High Instantaneous Trip function is provided in the circuit breaker for Series IZM97 set to pickup at 90kA. Instantaneous peak current level. The tolerance is 100% ±10% as the pickup points. 2. The peak current level setting for IZM99 is fixed at 176kA.
  • Page 85 7. This curve is for 50Hz, 60Hz applications. 8. These curves are comprehensive for series IZM97/99 breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
  • Page 86 8. This curve is for 50Hz ,60Hz applications. 9. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
  • Page 87 7. This curve is for 50Hz ,60Hz applications. 8. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
  • Page 88 7. This curve is for 50Hz ,60Hz applications. 8. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
  • Page 89 9. This curve is for 50Hz, 60Hz applications. 10. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.
  • Page 90 8. This curve is for 50Hz, 60Hz applications. 9. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 91 8. This curve is for 50Hz, 60Hz applications. 9. These curves are comprehensive for series IZM97/99 circuit breakers including all frame sizes, ratings, and constructions. The total clearing times shown include the response time for trip unit, the breaker opening and the interruption of the current.

  • Page 92: Section 7: Wiring Diagrams

    On a 4P circuit breaker, the neutral current sensor has the same style and wiring method as the phase sensor, located within the circuit breaker frame, no need to connect the secondary terminals 11N1, 12N2 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 93 C22-L-R-230. For 24 Vdc application, use C22-L- R-24. Remove the white (22 mm [0.89 in.]) diameter pilot light) Light Diffuser from the assembly to give better indication of voltage present. Activate the push-button to trip the circuit breaker. See Eaton for other voltages.
  • Page 94 Section 7: Wiring diagrams Under voltage release Monitored Voltage IZM series circuit breaker Notes: 1. Treated as the positive voltage for DC ratings. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 95 4. If the control voltage is +24 Vdc, the trip unit should be fed from a separate, galvanically isolated + 24 V voltage dc supply. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 96 1. Sensor is customer wired to sense neutral currents. This is required for 3 pole ,4 pole ACB no need to buy the external sensor. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 97 Sensor is customer wired to sense neutral currents. This is required for 3 pole ,4 pole ACB no need to buy the external sensor. Two external neutral transformers must be purchased for the two N-bars of the IZM99 circuit breakers, with serial connection to 11&12 New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 98 Section 7: Wiring diagrams Maintenance mode wiring New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 99 MODULE 31 PTVC 30 PTVB 29 PTVA To additional breakers (16 max) BREAKER IZM circuit breaker - 3 pole or 4 pole - 4 wire New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 100 Section 7: Wiring diagrams Zone interlock wiring New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 101: Section 8: Inspection And Maintenance

    Make appropriate corrections to anything lems. Never use a wire brush to clean any part of the circuit breaker. found out of order. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 102: 8-4.1 Functional Field Testing

    Verify whether the indicator (if so equipped) is popped out and then reset it. Reset the blinking red LED on the trip unit by pressing the Reset/Battery Test pushbutton. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 103: 8-4.3 Primary Contact Inspection

    Failure to do this could result in equip- ment damage, bodily injury, or even death. Once the inspection is completed, be sure to put the arc chutes back to its original place. New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...
  • Page 104 Contact Wear Indicator— Contacts Closed and in Good Condition Contacts Closed and Wear is Indicated Figure 8-5 Use of contact wear indicator with circuit breaker closed New generation IZM97, 99 low voltage air circuit breaker instruction manual MN013010EN February 2020 www.eaton.com.cn...

  • Page 105: Section 9: Troubleshooting

    Possible problems associated with the electronic trip unit are covered in MN013011EN. If the problem cannot be resolved with the aid of one or both of these guides, contact the Eaton service center for more in-depth assistance. Table 9.1 Circuit breaker troubleshooting guide.
  • Page 106 Disclaimer of warranties and limitation of liability The information, recommendations, descriptions, and safe- In no event will Eaton be responsible to the purchaser or ty notations in this document are based on Eaton experi- user in contract, in tort (including negligence), strict lia- ence and judgment, and may not cover all contingencies.

This manual is also suitable for:

Izm99

Table of Contents

Save PDF